GMC Sierra Denali 1500 2023 Owner's Manual page 230

7. Exit the vehicle and close the door. The
vehicle is now ready for the car wash.
8. The vehicle may automatically shift to
P (Park) upon re-entry.
Car Wash Mode (Engine On
Vehicle)
To place the vehicle in N (Neutral) with the
engine on and the vehicle occupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Shift to N (Neutral).
4. Release the brake pedal. The vehicle is
now ready for the car wash.
Car Wash Mode (Engine On
Vehicle)
To place the vehicle in N (Neutral) with the
engine on and the vehicle unoccupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Open the door.
4. Shift to N (Neutral), then release the
brake pedal.
5. The indicator should continue to show N.
If it does not, repeat Steps 2 4.
6. Exit the vehicle and close the door. The
vehicle is now ready for the car wash.
7. The vehicle may automatically shift to
P (Park) upon re-entry.
Driver in
A transmission hot message may display
if the automatic transmission fluid is too
hot. Driving under this condition can
damage the vehicle. Stop and idle the
engine to cool the automatic
transmission fluid. This message clears
when the transmission fluid has cooled
sufficiently.
Driver Out of
D : This position is for normal driving.
If more power is needed for passing, press
the accelerator pedal down.
To shift into D (Drive):
1. Bring the vehicle to a complete stop.
2. From the center position, move the shift
lever back.
If the vehicle is in P (Park) press the
shift lock release button while pulling
the shift lever back.
D will illuminate in red.
After releasing the shift lever, it will
return to the center position.
Caution
Driving and Operating
To shift out of D (Drive):
1. Bring the vehicle to a complete stop.
2. Shift to the desired gear.
3. After releasing the shift lever, it will
return to the center position.
Downshifting the transmission on a slippery
road could result in skidding. See Skidding
under Loss of Control 0 200.
Caution
Spinning the tires or holding the vehicle
in one place on a hill using only the
accelerator pedal may damage the
transmission. The repair will not be
covered by the vehicle warranty. If the
vehicle is stuck, do not spin the tires.
When stopping on a hill, use the brakes
to hold the vehicle in place.
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